.nav-footer {
  background: #fff;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  box-shadow: 0px 0px 0px 1px #e1e1e1;

  ul {
      height: 50px;
      padding-top: 6.5px;

      li {
          float: left;
          text-align: center;
          width: 25%;

          i {
              display: block;
              font-size: 20px;
          }

          span {
              font-size: 12px;
          }
      }
  }
}